Cheese from your nachos could soon help the planet

Key Points:

• Researchers at ETH Zurich have developed a method to convert food industry waste, specifically whey from cheese production and protein-rich tofu byproducts, into porous beads that capture carbon dioxide from the atmosphere.
• These protein-based beads, infused with potassium hydroxide, act as a "carbon sponge," capturing CO2 more efficiently—10% to 50% better—than conventional direct air capture (DAC) technologies.
• Unlike traditional DAC methods that require high heat and energy to release captured CO2, this new approach uses a low-energy process involving mild acid and base sprays at room temperature, potentially reducing costs and improving scalability.
• The beads demonstrated durability, maintaining performance through 30 capture-release cycles, and could eventually be repurposed as fertilizer or biofuel, offering a sustainable waste management solution alongside carbon capture.
• While currently tested only in laboratory settings, researchers are optimistic about scaling the technology, suggesting that food waste could become a valuable resource in combating climate change.